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(No Mouel.) 5 SheetsSheet 1. F. J. BURRELL. COMBINED T RAGTION ENGINEAND DIGGING MACHINE.

No. 406,194. Patented July 2, 1889 IN VE N TUB FlEu/rrelb ATTEBT! N.PETERS Phaiulilhwnrher. wnihingion. D. C.

(No Model.) 5 Sheets-Sheet 3.

No. 406,194. Patented July 2, 1889.

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(No Model.) 5 Sheets-Sheet 4. P. J. BURRELL.

COMBINED TRACTION ENGINE AND DIGGING MACHINE.

No. 406,194. Patented July 2, 1 889.

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' (No Model.) 5 Sheets-Sheet 5.

P. J. BURRELL. COMBINED TRACTION ENGINE AND DIGGING MACHINE.

No. 406,194. Patented July 2, 1889;

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UNITED STATES PATENT OFFICE.

FREDERICK J. BURRELL, OF vTHETFORD, COUNTY OF NORFOLK, ENGLAND.

COMBINED TRACTION-ENGINE AND DlGGlNG-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 406,194, dated July 2,1889.

Application filed June 21, 1887. Serial No. 242,056. (No model.)Patented in England y 12, 1886, No. 9,059, in France January 11, 1887,No. 180,817: in Spain February 16, 1887,11'0. 10,453, and in Italy March10, 188?,N0. 21,234..

To all whom it may concern:

Be it known that I, FREDERICK JOHN BUR- RELL, a subject of the Queen ofGreat Britain, and a resident of Thetford, in the county of Norfolk,England, have invented certain new and useful Improvements in CombinedTraction-Engines and Digging-Machines, (for which I have obtained apatent in Great Britain, No. 9,059, dated July 12, 1886,) of which thefollowing is a full, clear, and exact specification.

My invention relates to improvements in traction-engines.

My invention consists of mechanism added to the ordinarytraction-engine, whereby the same may be propelled when operating adigger or remain stationary when running machinery.

In the side view Figure 1 is shown the gearing for driving theroad-Wheels, and in the side view Fig. 2 is shown the gearing fordriving the crank-shaft which actuates the digging-forks. Fig. 3 is atransverse section taken on line x x of Fig. 1. Fig. etrepresents a backview, partly in section, of the same machine, taken on line 3 y of Fig.2. Fig. 5 is a longitudinal section of the rear end of the machine; and.Fig. 6 is a plan view of the same with the crank-shaft which actuatesthe digging-forks removed. Fig. '7 represents a modified form of themechanism for operating the diggers.

In the above figures the digging-forks are shown to be actuated by theupper end of their stems being coupled to the cranks on the crankshaft.If the stems of the digging-forks are coupled at an intermediate pointof their length to the cranks and at their upper ends to links, then thecrank-shaft is put into a lower position, as shown in Fig. 7.

Similar letters refer to similar parts throughout the drawings, inwhich' A is the boiler, with the cylinderB mounted upon the top of itand driving the crank-shaft C. On this crank-shaft there is, as usual, afly-wheel, which also serves as a band-wheel, to allow of stationarymachinery being driven from it.

A A are the horn-plates of the fire-box, carried back and made to serveas a frame for carrying the shafts of the digging mechanism. Thebackward extensions of these plates are tied together by a horizontalplate, upon which the driver stands.

D D are two pinions on the crank-shaft of the engine, either one orother of which can be put into gear with one or other section of thedouble spur-wheel E on the countershaft F. A pinion G at the oppositeend of this counter-shaft can be slid into gear with a toothed wheel Hon the axle of the roadwheels, so that the road-wheels can be driven ateither one or other of two speeds for traveling or'hauling purposes.

When the machine is to be used for digging, the pinion G is slid endwisealong the counter-shaft, so as to be out of gear with the wheel H, and atoothed wheel I is then brought into gear with the pinion, and also atthe same time a pinion J, which is fast with the wheel I, is broughtinto gear with an internal ring of teeth, forming part of the toothedwheel H. In this way the axle of the road-wheels is driven at the slowspeed requisite for digging. The toothed wheel I and pinion J are, asshown, carried by an eccentric bush K, so that by turning this eccentricthey may be shifted in or out of gear.

From one section of the double spur-wheel E motion is transmitted to thecrank-shaft M, which gives motion to the digging mechanism. Thespur-wheel E is for this purpose made to gear with an intermediate WheelL, which also gears with a toothed wheel N on the crank-shaft M. Inorder, also, that the crank-shaft of the digging mechanism shall not berotated when the engine is traveling along a road or is being used forother purposes than digging the intermediate wheel L is, as shown inFig. 2, carried by an eccentric, so that by turning the eccentric it canbe put into or out of gear with the spur-wheel E, as required.

IVh en the crank-axis M is placed in the upper positionshown in Figs. 1to 6 of the drawings the cranks upon it are used to give motion to thestems of digging-tools, which are properly pointed, as seen in the forks0.

If the stems of the digging-tools are to be acted on by the cranks at anintermediate point of their length and coupled to guiding links at thetop, then the crank-axis M is placed in that position indicated, or thebearings of this axis can be made capable of being shifted along guidesfrom the one position to the other.

By constructing the machine in the abovedescribed manner the diggingmechanism is in the place where, in ordinary traction-engines, thewater-tank is fixed. To allow of this I place the water-tank under thebarrel of the boiler or at the side. The space for coal may remain inthe same position, as usual. Instead of the horn-plates being carriedback in one piece a frame carrying the digging mechanism may be boltedto the horn-plates. The draw-bar for hauling is fixed to the plates ofthe digging-frame and forms a stay and distance-piece to keep the framerigid. The horn-plates are tied together below by a T- iron, which goesacross, and to which the bearings for the axis of the under lever armsor links of the digging mechanism are bolted.

It will be seen that by the construction of the tender at the back andby the arrangement of the shafts and gearing hereinbefore described themachine, While it embodies all the advantages of the most approved formof traction-engine of the present day,with winding-drum, draw-bar,fly-wheel, &c., in their usual places, can also be used as adiggingmachine, the framing at the back stayed in the manner showngiving ample support for the digging-gear, and the crank-axle of thisgear bein very conveniently driven from the intermediate wheel carriedby the eccentric bush for throwing in and out of gear.

Hitherto steam-diggers have not been generally useful; but my object hasbeen to preserve the standard design of traction-engine, so that nothingmay be sacrificed to the digging-gear. This has never before beenattained in any other digging-machine.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a traction-engin e, of the horn-plates A,having journal-bearings for crank-shaft C, rotary shafts F,shaft-earrying eccentric K, shaft M, and the main shaft carrying thewheels supporting the rear portion of the structure, substantially asshown and described.

2. The combination, with a traction-engine, of the crank-shaft G,pinions D D, double spur-wheel E, mounted on the countenshaft F, pinionG, gear-wheel H, gear-wheel 1, pinion J, and eccentric bush K,substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this25th day of April, 1887.

FREDK. J. BURRELL.

Witnesses:

T. H. HARRISON, W. II. LEGGATT.

